Cable winding drum or sheave



1 Sept. 19, 1933. G, ALLEN 1,927,673

CABLE WINDING DRUM OR SHEAVE Filed Sept. 2, 1930 Patented Sept. 19, 1933i STA I OABLEUWINDING DRUM on snEnvE a I 'G oi'geT "411m; Montbeiiqjoaiir. Application September 2, 193i Serial No. 4"X !,1'78.- l3Ola ms. f(o1.242+ 117') 1 My invention relates'generally' to cable winding drums or sheaves. and more"particularly to a renewable andreversible shell for drums or sheaves and the principal object of myinvention is to provide a relatively simple and practical constructionembodying a shell or sleeve that is removably positioned upon the bodyof a sheave or drum, thereby enabling the outer or wear receivingportion of the sheave or drum to be easily and quickly renewed in theevent of breakage or excessive wear, or said shell or sleeve may beconveniently reversed in position upon the body of the drum or sheave inorder to equalize the wear that said sleeve or shell receives from thecable that operates thereon.

A further object of my invention is, to provide a cable winding drum orsheave having a renewable wear receiving shell that is relatively simplein construction, inexpensive of manufacture, capable of being easily andquickly applied to or removed from the body of the drum or sheave andwhich improved construction effects a material saving in the cost ofrepairs and renewal of parts that become worn to such a degree as to beunfit for service. v

With the foregoing and other objects in view, my invention consists incertain novel features of construction and arrangement of parts thatwill hereinafter be more fully described and claimed and illustrated inthe accompanying drawing in which:

Fig. 1 isa side elevational view of a drum or sheave constructed inaccordance with my invention. v

Fig. 2 is an elevational view looking in the direction indicated by thearrow 2 in Fig. 1.

Fig. 3 is a longitudinal section taken on the line 3-3 of Fig. 1.

Fig. 4 is an end elevational view looking in the direction indicated bythe arrow 4 in Fig. 1.

Referring by numerals to the accompanying drawing which illustrates apractical embodiment of my invention, 10 designates the cylindrical bodyof a cable winding drum or sheave, which body is secured in any suitablemanner upon a power driven shaft 11. Formed integral with the inner endof this cylindrical body 10 is an outwardly projecting circumferentialflange 12 and the opposite end portion of the body is externallythreaded as designated by 13 Formed in the outer portion of flange 12 isa notch or a plurality of notches 14.

The removable shell or sleeve that forms a part of my improved drum,comprises a hollow cylindrical member 15, the opening through whichreceives the body 1O and formed'integral with the ends-of the shellorsleeve-15 are outwar'dly projectingcircumferential flanges 16.

The flange 16 at the inner end of the shell fits directly over flange 12at the inner end of the 60 body 10 and formedintegral with the outerportion of this flange 16 is a lug 17'or aseries of lugs that areadapted to occupy the corresponding notches 14 when the sleeve isproperly positioned upon the body of the drum.

The outer one of the, flanges 16 has formed: integral therewith, a lugor lugs 18 that are practically identical with the lugs 17 and theselugs are adapted to occupy notches '19 that are formedjin a washer '20that is positionedv onthe outer portion of the drum body 10 and whichbears directly against the outer face of the outer with a readilyremovable shell or sleeve that is interlocked with said body by means ofthelugs 17 and 18 that engage respectively in the notches I 14- andl9'and in the event that the shell ber comes worn as a result of theoperation of the 'cable thereupon, or if said shell becomes cracked andbroken as a result of rapid changes in tem-' 'perature produced by thefriction of, the cable that operates. on the surface of said drum, saidshell or sleeve may be readily removed and replaced.

Inasmuch as the shell portion of the drum Q is capable of being removed,it is not necessary to discard the'entir'e drum in the event that theshell or sleeve becomes wornor "broken as a result of wear developed bythe winding and unwinding-of the cable on the shell or sleeve.

In some instances or whereonly a limited number of turns of cable arecarried'on the drum, v

one end portion thereof, or that portion upon which the cable bears willwear much more quickly then theother portion and where such uneven wearoccurs, the shell or sleeve'maybe readily removed and reversed inposition upon the body of the drum, thereby providing a practicallyunworn cable receiving surface.

Thus it will be seenthat I have provided'a cable winding drum or sheavewinding drum or sheavethat is relatively simple in construction,

sheave maybe made and substituted forthos'e herein shown and. describedwithoutdeparting from the spirit of my invention, the scope of.

which is set forth in the appended claims.

7 I claim as my invention:

one end thereof, a collar removably vmounte d on the other end of saidcylindrical body, a shell removably positioned on said body and providedwith flanged end portions that overlie the flange on the body and saidcollar, the end of the cylindrical body opposite the flanged end beingthreaded, a nut seated 'on' said threaded end and a washer arrangedbetween said nut and the adjacent. end of the. shell, which nut ison'the other end of said' cylindrical body, a g Y 1 shellremo'yablypositioned on said body and pro- '1. A cable winding drum or sheavecomprising 1 a cylindrical body, a shell removablyarranged on said body,interengaging-"imeans between said. shell and body and means includinganut, and, Washer for securing said shell upon said'body.

2., Ina cable winding drum or. sheave, asubstantially cylindrical body,afiangeintegral with vided. with flanged end portions that overlie theflange on the body and said collar, interengagingvmeans;bctweentheiflanged. ends of said shell, the

flange on, the body and said collar and a nut screw-seated on the end ofthe cylindrical body opposite the .flan edoendthereof for retainin thecollarand shellon. said cylindricaltbody. I

GEORGEYA.

I as

